1022020357 has 2 divisors, whose sum is σ = 1022020358. Its totient is φ = 1022020356.

The previous prime is 1022020343. The next prime is 1022020379. The reversal of 1022020357 is 7530202201.

It is an a-pointer prime, because the next prime (1022020379) can be obtained adding 1022020357 to its sum of digits (22).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 990109156 + 31911201 = 31466^2 + 5649^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1022020357 is a prime.

It is a super-2 number, since 2×1022020357² = 2089051220244814898, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1022020457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511010178 + 511010179.

It is an arithmetic number, because the mean of its divisors is an integer number (511010179).

Almost surely, 2^1022020357 is an apocalyptic number.

It is an amenable number.

1022020357 is a deficient number, since it is larger than the sum of its proper divisors (1).

1022020357 is an equidigital number, since it uses as much as digits as its factorization.

1022020357 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 1022020357 is about 31969.0531139100. The cubic root of 1022020357 is about 1007.2868912410.

Adding to 1022020357 its reverse (7530202201), we get a palindrome (8552222558).

The spelling of 1022020357 in words is "one billion, twenty-two million, twenty thousand, three hundred fifty-seven".